Main configuration: compressor, liquid storage tank, safety valve of liquid storage tank, oil reservoir, oil level controller, oil level controller adapter, oil pressure difference check valve, oil way stop valve, oil filter, liquid supply filter, air return filter, sight glass, sight glass, oil separator, gas-liquid separator, muffler, distribution box, high and low pressure gauge, pressure controller, oil Differential pressure controller. Under the standard configuration, the main return air and exhaust air are all single branch. If additional branch is needed, additional branch can be added.